New agents for improving the handling of hydraulic binders, their preparation, the binders containing them and their applications

摘要

New agents for improving the handling of hydraulic binders are obtained by reaction of polyalkylene glycols (PEG) and more especially, polyethylene glycol and their derivatives such as alkylene oxide copolymers such as ethylene oxide or propylene oxide with mono-, di-, or triisocyanates and optionally alcohols of low molecular weight